Recent comments in /f/space

LunaticBZ t1_je1k6yh wrote

Hypothetically say China and U.S. do even a tit for tat exchange and take out one of each other's satellites with an ASAT.

Given how much more we have in space these days I don't think it would take much at all to kick off Kessler Syndrome.

In the event of WWIII I think it's safe to assume that the space aspect of the war will be short lived. As it's all going to be shredded.

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clayt6 t1_je1k2sj wrote

Just for the record, Andromeda321 is a postdoctoral fellow in astronomy at the Harvard-Smithsonian Center for Astrophysics who specializes in radio astronomy, so I really would take what she has to say seriously. The researchers behind this new study also acknowledge at the end of the article there's a 5% chance that the apparent connection between the FRB and the gravitational waves is entirely a coincidence, which is pretty darn significant (and possibly up for debate). I believe that's the main point she wanted to make.

If a causal connection is confirmed, these results are very intriguing and fascinating. But as is often the case in science, independent and more exhaustive confirmation is key before we get too excited.

With that being said, you're definitely not wrong to be skeptical of a seemingly random redditor's claim lol

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VesDoppelganger t1_je1j9ia wrote

>These officials told investigators that renovating existing Space Command facilities at Peterson Space Force Base, Colorado, would allow the command to reach “full operational capability” faster than constructing a brand-new building in Huntsville and relocating a workforce of about 1,500 people.

This is the only answer to this stupid debate. Please bring those renovation dollars to a place that already holds the majority of personnel and work being done rather than reinventing the wheel, so to speak.

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cnn t1_je1j3nf wrote

Trillions of pounds of water may be strewn across the moon, trapped in tiny glass beads that could have formed when asteroids struck the lunar surface, according to a new study. The findings, laid out in a study published Monday in the journal Nature Geoscience, were pieced together by scientists in China who analyzed the first lunar soil samples to be returned to Earth since the 1970s.

The research points to an answer for a question scientists have been pondering for years as they’ve attempted to pin down exactly how water is stored on the moon — especially in regions outside the lunar poles, where water ice may exist in greater abundance. Essentially, the study fills in some gaps in a theory about a lunar water cycle.“

To sustain a water cycle at the surface of the Moon, there should be a hydrated layer (reservoir) at depth in lunar soils,” according to the study. “However, finding this water reservoir has remained elusive, despite several studies having investigated the water inventory of fine mineral grains in lunar soils.”

https://www.cnn.com/2023/03/27/world/water-moon-lunar-sample-chang-e-5-scn

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spsheridan OP t1_je1i8ca wrote

This paper was submitted to and published by Nature Astronomy. Presumably, it was peer-reviewed before being published. If the probability of the FRB being associated with the gravitational wave is not much better than random chance, what does that say about the peer review process at Nature Astronomy? Is it broken?

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Preshe8jaz OP t1_je1i04q wrote

I usually see them shortly after dusk, but morning as well. I assumed it was bc I sleep from 10-6, but the Sun placement makes sense. Thanks for that tidbit. As far as groups, they are rarely in sequence. Sometimes I see two aligned and just offset. Usually they are flowing in generally the same N-S direction with one or two seconds behind the other. The E-W satellites seem much more rare. Pardon my ignorance. I have no formal training, just a Sky gazer and mediocre Googler.

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LunaticBZ t1_je1hzbv wrote

Hey OP question have you watched Isaac Arthur's video on power satellites?

I don't remember how much detail the video goes into, but there's links in the description for more reading and sources usually

Personally I think we will do some power satellites for Earth, but I doubt it becoming a major power component. My view is based on a lot of assumptions about the future though.

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raishak t1_je1hk83 wrote

Unless there's some news, I missed I don't think we've measured Hawking Radiation (certainly not from a black hole). However, it is well defined mathematically and appears independently through several different approaches. I don't think anyone credible is disputing hawking radiation regardless.

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